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+---
+title: "Get changed fields in server scripts in ServiceNow"
+description: "In ServiceNow you often write Business Rules or some other logic, based on fields that has been changed/updated. For the most part, this can be done via GUI, but sometimes you have to resort to some scripting."
+date: 2021-08-17T10:04:06+02:00
+tags: ['servicenow', 'javascript']
+draft: false
+---
+
+In ServiceNow you often write Business Rules or some other logic, based on fields that has been changed/updated. For the most part, this can be done via GUI, but sometimes you have to resort to some scripting. If you ever need to get which fields has been changed/updated, e.g in an advanced filter, this is how you check for it.
+
+<!--more-->
+
+```javascript
+(function(current){
+    var gru = GlideScriptRecordUtil.get(current);
+
+    // Returns an arrayList of changed field elements with friendly names
+    var changedFields = gru.getChangedFields();
+
+    //Returns an arrayList of changed field elements with database names
+    var changedFieldNames = gru.getChangedFieldNames();
+
+    //Returns an arrayList of all change values from changed fields
+    var changes = gru.getChanges();
+
+    // Convert to JavaScript Arrays
+    gs.include('j2js');
+    changedFields = j2js(changedFields);
+    changedFieldNames = j2js(changedFieldNames);
+    changeds = j2js(changes);
+
+    gs.info("Changed Fields: " + JSON.stringify(changedFields));
+    gs.info("Changed Field Names: " + JSON.stringify(changedFieldNames));
+    gs.info("Changes: " + JSON.stringify(changes));
+})(current);
+```